Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:45:00

Orbital Elements for HDS2445

WDS:	HDS2445	WDS ID/Discoverer
P:	45.800	Orbital period (years)
a:	0.2781	Semi-major axis (arcseconds)
i:	97.2	Inclination (degrees)
Ω:	84.7	Longitude of ascending node (degrees)
T:	2009.140	Epoch of periastron passage (year)
e:	0.149	Eccentricity
ω:	140.4	Longitude of periastron (degrees)
Start-Year:	2003.0	Year
End-Year:	2047.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2445

Position:	171734.67+102459.3	Epoch-2000 right ascension and declination
WDS-ID:	17176+1025	WDS designation
Discoverer Code:	HDS2445	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	156498	HD catalog number
Hipparcos number:	84595	Hipparcos catalog number
V1:	8.86	Magnitude of the primary
V2:	10.25	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS2445

WDS 6th Orbit including measures of HDS2445

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)

Ephemeris of HDS2445

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.056    127.7
-------------------------
2003.0     0.062     54.7
2004.0     0.034     15.8
2005.0     0.043    310.1
2006.0     0.077    286.8
2007.0     0.114    278.2
2008.0     0.149    273.8
2009.0     0.179    270.9
2010.0     0.205    268.9
2011.0     0.225    267.3
2012.0     0.238    265.9
2013.0     0.244    264.6
2014.0     0.244    263.3
2015.0     0.237    262.0
2016.0     0.225    260.6
2017.0     0.208    259.0
2018.0     0.186    257.1
2019.0     0.160    254.5
2020.0     0.132    251.0
2021.0     0.102    245.5
2022.0     0.073    235.3
2023.0     0.047    212.8
2024.0     0.038    165.8
2025.0     0.056    127.7
2026.0     0.084    111.3
2027.0     0.114    103.5
2028.0     0.144     98.9
2029.0     0.173     95.9
2030.0     0.200     93.7
2031.0     0.225     92.0
2032.0     0.247     90.7
2033.0     0.266     89.5
2034.0     0.282     88.5
2035.0     0.294     87.6
2036.0     0.303     86.8
2037.0     0.308     86.0
2038.0     0.309     85.2
2039.0     0.305     84.4
2040.0     0.298     83.5
2041.0     0.286     82.7
2042.0     0.270     81.7
2043.0     0.249     80.6
2044.0     0.225     79.2
2045.0     0.196     77.5
2046.0     0.164     75.2

Disclaimer

Acknowledgements

The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.